Dishwasher: Won't fill
A dishwasher that doesn't fill with water when you press Start is little more than a place to hide dirty dishes. First, make sure that the water supply cut-off valve is open. If it is, then try an easy fix: check whether an object is preventing the overfill float from moving up and down freely. If it's stuck in it highest position, the fill valve won't let water into the tub. If that doesn't take care of it, a few different dishwasher components could be interfering with filling. View the troubleshooting videos below to be on your way to flowing water.
These repairs may help solve your Dishwasher problem:
Replace the dishwasher water inlet valve
The water inlet valve, also called a solenoid fill valve, controls the flow of water into the dishwasher by opening and closing. If the water inlet valve doesn't open at all, water can't flow into the dishwasher. If it opens partially, the dishwasher won’t fill adequately, and the water level will be low—a noisy pump is one indication that the water level is low. Conversely, if the water inlet valve won’t close, water fills the dishwasher tub even when the dishwasher is off. If the water inlet valve doesn't open or close correctly, repair or replace it.
Replace the dishwasher overfill float switch
The overfill float switch is located under the tub and is attached to the mushroom float inside the tub, which rises and lowers with the water level in the tub. When the overfill float switch detects that the water level is too high, it shuts off power to the water inlet valve, stopping the flow of water into the tub. Even if the mushroom float is working properly, the micro-switch could have failed. Replace the micro-switch if it fails.
Replace the dishwasher door latch assembly
The dishwasher won't start if the door isn't completely shut and latched. If the door doesn't latch shut, replace the latch mechanism. Even if the door latches fully, a problem with micro-switch in the door latch/switch assembly could keep the dishwasher from starting; in that case, replace the micro-switch.
Replace the dishwasher control panel
When the control panel, also called the control console, becomes visibly loose or damaged, replace it. A stuck button can also cause the dishwasher to become unresponsive. A light may flash constantly on the control panel when a button is stuck.
Replace the dishwasher electronic control board
The electronic control board runs all dishwasher functions. If the electronic control board is getting voltage, but not operating properly, it should be replaced.
Replace the dishwasher timer
The timer controls the electro-mechanical components in the dishwasher such as the wash pump, drain pump, inlet water valve and heating element. The timer also advances the control knob on the control panel. Replace the timer if it fails to start and stop the components properly or fails to advance the control knob.
Replace the dishwasher water inlet assembly
The water inlet assembly is an apparatus that is mounted to the side of the dishwasher tub near the water inlet valve. It receives water from the water inlet valve and directs it into the dishwasher tub through a vented opening. If the vent or the connecting hose is clogged, then the inlet assembly will need to be repaired or replaced.